Re: Please help: very urgent: Query on patented algorithms
At 01:20 PM 6/16/2008, Michael Sierchio wrote: RC4 is owned (and trademarked) by RSA Security Inc, but they are no longer enforcing the patent, RC4 was never protected by patent, but by trade secret. When the details of the algorithm were published, Ron Rivest himself suggested calling the alleged RC4 ARCFOUR. It is indeed a trademark of RSA Security. Michael is right. No patent. RSA subsequently switched to patent protection for RC5 and RC5. Some ancient history might offer context. RC4, developed by Rivest in 1987, was originally sold, under contractual constraints, as a proprietary RSA trade secret -- a mode of IP protection which soon proved to be frail and toothless in Cyberspace, where anonymous publication on the Net broke the trade secret contract but allowed the perpetrator to escape all liability. RSADSI initially filed for US trademark protection on RC4 in 1993, and the trademark -- as a mark of origin, a mark that identified the source of the distributed code -- became the last line defense for the RC4 IP when the RC4 algorithm was reverse engineered and published on the Cypherpunks List in September of 1994. In a swirl of ironies, this was a critical event in public crypto history, because the illicit publication of RC4 made it possible for non-US developers to do their own versions of SSL. SSLea, ancestor of OpenSSL, soon broke the NSA's restrictive policies on the international use of strong-crypto SSL for browsers and web-based transactions. Many versions of alleged RC4 (ARC4 or ArcFour) were soon in widespread use, even in IETF standards. Anyone can code or use ACR4, but EMC/RSA still defends its monopoly on the RC4 trademark because undefended trademarks become invalid. _Vin __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: Please help: very urgent: Query on patented algorithms
Hi, Use the tool Dependency Walker (http://www.dependencywalker.com/) to look at the exported functions of libeay32.dll. If it exports RC5, you will see exported symbols starting with RC5. For MDC2, you'll find symbols starting with MDC2 and etc... Cheers, -- Mounir IDRASSI IDRIX http://www.idrix.fr On Mon, June 16, 2008 3:55 pm, bagavathy raj wrote: Hi, I have openssl dlls(i.e.libeay32.dll, ssleay32.dll). I need to know if these libaries are using any of the patented algorithms like IDEA, RC4, RC5,MDC2 etc. Can you please let me know if there is any way to find out this? Any help would be highly appreciated. Thanks in adavance, Bagavathy __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: Please help: very urgent: Query on patented algorithms
Hi, Is there any binary distribution where I can find SSL dlls without patented algorithms like IDEA,MCD2,RC4,RC5 etc. I tried compiling without them. I could exclude other algos but not RC4. Some linking issues. So i need to know if there is any ssl release without the patented algorithms. On 6/16/08, Mounir IDRASSI [EMAIL PROTECTED] wrote: Hi, Use the tool Dependency Walker (http://www.dependencywalker.com/) to look at the exported functions of libeay32.dll. If it exports RC5, you will see exported symbols starting with RC5. For MDC2, you'll find symbols starting with MDC2 and etc... Cheers, -- Mounir IDRASSI IDRIX http://www.idrix.fr On Mon, June 16, 2008 3:55 pm, bagavathy raj wrote: Hi, I have openssl dlls(i.e.libeay32.dll, ssleay32.dll). I need to know if these libaries are using any of the patented algorithms like IDEA, RC4, RC5,MDC2 etc. Can you please let me know if there is any way to find out this? Any help would be highly appreciated. Thanks in adavance, Bagavathy __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: Please help: very urgent: Query on patented algorithms
On 6/16/08, bagavathy raj [EMAIL PROTECTED] wrote: Hi, Is there any binary distribution where I can find SSL dlls without patented algorithms like IDEA,MCD2,RC4,RC5 etc. I tried compiling without them. I could exclude other algos but not RC4. Some linking issues. So i need to know if there is any ssl release without the patented algorithms. RC4 is owned (and trademarked) by RSA Security Inc, but they are no longer enforcing the patent, and will allow free usage of the OpenSSL implementation of this cipher to those that ask. However they do require that OpenSSL toolkit users either do not call it RC4, or call it Alleged RC4 cipher to avoid trademark infringement. If you even mention the words RC4 in your documentation you may need to mention that it is Alleged and that RC4 is a trademark of RSA Security. RC2 is also a trademark of RSA Security, but this one can be used without the Alleged prefix, providing you list them as the trademark owner. Disclaimer: I am not a lawyer, and I suggest you contact RSA directly to confirm this information on your own. -Chris __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: Please help: very urgent: Query on patented algorithms
RC4 is owned (and trademarked) by RSA Security Inc, but they are no longer enforcing the patent, RC4 was never protected by patent, but by trade secret. When the details of the algorithm were published, Ron Rivest himself suggested calling the alleged RC4 ARCFOUR. It is indeed a trademark of RSA Security. __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
